2004 Mercedes-Benz SL 3.7L Petrol · BD04 GCF
2004 Mercedes-Benz SL (3.7L, petrol). First registered 14 May 2004. Recorded mileage 45,128 miles. MOT expired on 20 Feb 2026.
- Make & Model
- MERCEDES-BENZ SL
- Year / Origin
- 2004 · Birmingham
- Safety Recall
- Unknown
- MOT Status
- Expired on 20 Feb 2026
- Road Tax
- —
- Recorded Mileage
- 45,128 mi
- ULEZ Compliance
- Check Required (Pre-Euro 4 Petrol)
- Fuel & Engine
- Petrol · 3.7L
- Reliability Guide
- Common Faults
Thinking of buying this vehicle? Free MOT and tax checks do not cover legal ownership. If outstanding finance exists, finance companies have legal right to repossess without compensation.
BD04 GCF Key Findings
- 4 MOT tests recorded
- Latest MOT passed on 21/02/2025
- 45,128 miles recorded at latest MOT
- 1 historical MOT failure
- No defects recorded at the latest MOT
Derived directly from the recorded DVSA and DVLA data shown on this page.
BD04 GCF MOT History
Interpretation generated from the recorded test data above — not an official DVSA statement and not a substitute for an independent inspection.
4 MOT tests are recorded for this 2004 Mercedes-Benz Sl (BD04 GCF) between November 2022 and February 2025.
The record contains 3 passes and 1 failure.
The most recent test on 21 February 2025 was a pass, although the earlier record includes 1 failure that buyers may want to investigate.
BD04 GCF Mileage History
- 01/11/202242,958 mi
- 25/10/202343,991 mi+1,033 mi
- 26/10/202343,992 mi+1 mi
- 21/02/202545,128 mi+1,136 mi
Average of roughly 940 miles per year across 4 recorded odometer readings.
Technical Specifications
Core Specifications
Identification & Status
Dimensions & Weights
Diagnostic & Valuation Intelligence
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Known faults for Mercedes-Benz Mercedes-Benz SLK (R171)
Our database tracks 6 specific mechanical faults and recurring failure patterns identified across UK MOT testing stations for this generation.
MOT Roadworthiness: Below Average
This rating reflects historical MOT pass rates and recurring advisory wear patterns from official DVSA test logs. Note that roadworthiness does not verify outstanding finance, insurance write-offs, or stolen records.
Verify lender finance agreements, insurance write-offs, police stolen registers, and mileage rollback.
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MERCEDES-BENZ SL Model Intelligence & Reliability
Verified MOT failure trends, buying advice, and technical directory specifications.
Owner-reported defects, recurring MOT failure points, and estimated repair costs.
Browse production generations, registration statistics, and trim variants.
Historical MOT pass rates and DVLA records for 2004 model year cars.
- M272 V6 Balance Shaft WearSerious
Early 3.0L and 3.5L V6 engines used soft metal gears on the balance shaft. The gears wear down, altering engine timing and requiring a massive engine-out repair.
- Vario-Roof Hydraulic LeaksModerate
The complex folding hardtop uses multiple hydraulic cylinders that can leak as the seals age.
- Rear Subframe Corrosion and PerforationSerious
The pressed-steel multi-link rear subframe on the R171 SLK is highly prone to severe internal corrosion, aggravated by decades of wet UK winter roads and road salt. Moisture and grime accumulate inside the hollow box sections, rusting the subframe from the inside out until structural perforation occurs around the suspension control arm mounting points. In severe cases, an arm mount shears off entirely, causing sudden dangerous rear-wheel steering and an immediate MOT failure. Mercedes-Benz UK has historically assessed replacements under goodwill on a case-by-case basis.
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